we have purchased a casing with size of 18 5/8 inches , but the thickness at the end of thread is much lower than the body thickness and exceed the minus 12.5% which has been mentioned in the API 5CT for body.
i know due to the taper, certainly the thickness at the end is lower than casing body...
we purchased some ball valves from one of the factories as follows :
1- 18"-Class 600- Flanged, Top entry ball valve, F.B:
2- 18"- Class 600- Flanged, Top entry ball valve, R.B:
3- 20" –Class 600 –Flanged, Top entry ball valve, R.B
4- 24"-Class 600-Flanged, Top entry ball valv, R.B
during...
Dear ALL,
I have reviewed reference standard No.: BS 1083:1965 for Screws and Nuts,in this booklet Grades has been mentioned by English letter's such as A,R...and so on,but as i have searched grades for these commodities has been mentioned by numbers such as 4.8,then i want to know how grade...
